Feed-gage foe



' T. F. HANCOCK.

FEED GAGE FOR PLATEN PRESSES.

APPLICATION FILED MAY 21. 1919- Patented Nov. 25, 1919.

ATTORNEY if TED STATES THOMAS F. HANCOCK, OF SEYMOUR, CONNECTICUT.

FEED-GAGE FOR PLATEN-IPRESSES.

Specification of Letters Patent.

Patented Nov. 25, 1919.

- Application filed May 21, 1919. Serial No. 298,600.

To all whom it may concern Be it known that I, THOMAS F. HANCOCK, a citizen of the United States, residing at 41 Derby avenue, Seymour, county of New Haven, State of Connecticut, have invented an Improvement in Feed-Gages for Platen- Presses, of which the followingis a specification.

This invention has for its object to provide a gage or guide for use by printers on platen presses, that may be blanked out and formed complete from a single piece of metal, and shall comprise a stop flange, retaining flanges, and a pin for securing the gage to the platen cover or tympan sheet.

With these and other objects in view I have devised the novel feed gage which I will now describe referring to the accompanying drawing forming a part of this specification and using reference characters to indicate the several parts.

Figure 1 is a perspective view showing my novel gage attached to the tympan sheet of a press, and illustrating its mode of operation;

Fig. 2 is a perspective view on an enlarged scale of the gage pin detached, and

Fig. 3 is a perspective view of the blank, from which the structure is formed, ready to be bent to shape.

10 denotes the platen of a printing press,

11 the platen cover which consists of a plurality of layers of paper, the top layer of which usually called the tympan sheet, is removed each time the form is changed, and 12 a sheet of paper on which matter is to be printed by type carried by a type bed, not shown.

The important advantages of my novel feed gage are that it is adapted to be placed transversely to the line of movement of the paper in feeding and provides a relatively long stop flange, thus insuring accurate and uniform placing of the sheets to be printed upon the platen and accurate register of the printed matter that the gage may be readily and quickly applied to the tympan sheet and as quickly removed; that it is so constructed as to permit of its being placed within a quarter of an inch of the edge of the platen, thus giving a large printing surface and enabling the operator to use a form nearly the full size of the chase; that the sheets are effectually prevented from slipping either over or under the gage, and that it will re-' tain its adjustment so perfectly that the registering of the sheets will be as accurate at the end of the days work as at the beginning.

The shape of the blank is clearly shown in Fig. 3 which also shows scorings at which the bends are made.

18 denotes the top plate of the gage and 11 the stop flange which is bent downward at a right angle from the top plate and rests on the tympan sheet, making a close enough fit therewith so that there is no danger of the sheet to be printed passing under the edge thereof, that is between the stop flange and the tympan sheet. 15 denotes the retaining flanges which are continuous with the top plate and extend outward therefrom far enough to prevent the edge of the sheet at right angles thereto, and lies parallel with the top plate. The end of the pin is sharpened so as to permit it to be passed readily through the tympan sheet and is curved upward for convenience in passing it through the tympan sheet and then outward again, as

clearly shown in Fig. 1. A locking notch 19 is provided in end plate 17 which just receives the pin and retains the gage securely in place on the tympan sheet, the resiliency of the metal causingthe top plate and the pin to move toward each other so that the pin will remain securely in the notch.

The operation will be clearly understood from Fig. 1. The required position of the feed gage upon the tympan, sheet having been ascertained, the pin is detached from slot 19, passed through the tympan sheet, then forward under the tympan sheet and then outward, after a long hold has been taken on the tympan sheet, and is then engaged with the notch.

Having thus described my invention, I claim;

A feed gage for platen presses blanked out 16 and 17 denote end plates 75 and formed from a single iecezof sheet metal and comprising a top p late, retaining flanges extenoling outward therefrom, a stop flange atright angles tothe top plate, and end plates at right angles to the top plate and also at right anglesto the stop flange, one of said end plates being provided With a passed through a tympan sheet and out '10 again andthen engaged with the' notch.

In testimony whereof I afliX my signature.

THOMAS F. HANCOCK. 

